JP2952507B2 - Evaporation and concentration equipment for photographic processing waste liquid - Google Patents
Evaporation and concentration equipment for photographic processing waste liquidInfo
- Publication number
- JP2952507B2 JP2952507B2 JP10937890A JP10937890A JP2952507B2 JP 2952507 B2 JP2952507 B2 JP 2952507B2 JP 10937890 A JP10937890 A JP 10937890A JP 10937890 A JP10937890 A JP 10937890A JP 2952507 B2 JP2952507 B2 JP 2952507B2
- Authority
- JP
- Japan
- Prior art keywords
- photographic processing
- waste liquid
- processing waste
- cooling
- evaporation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims description 40
- 239000002699 waste material Substances 0.000 title claims description 36
- 238000001704 evaporation Methods 0.000 title claims description 22
- 230000008020 evaporation Effects 0.000 title claims description 13
- 238000001816 cooling Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000002826 coolant Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 239000010802 sludge Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、写真処理廃液をガス発生がなく、かつ経
済的に濃縮処理する装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for economically concentrating waste photographic processing liquid without generating gas.
写真処理廃液は、銀塩感光材料を現像処理するために
使用した写真処理液の老廃物であり、これには、もとよ
り調合した化学成分に加え、銀塩感光材料より溶出した
成分や、化学反応生成物が含まれるため、写真処理に悪
影響するから写真処理を良好に持続するためには、処理
した感光材料の量に応じて新液補充によって、その性能
を補い、不要の汚染成分が含まれ老化した液を廃棄す
る。これが写真処理廃液である。そしてその廃棄量は、
写真処理の種類によって異なるけれども、例を挙げるな
らば0.03cc/cm2のものもある。The photographic processing waste liquid is a waste product of the photographic processing liquid used for developing the silver salt photosensitive material, and includes, in addition to the originally prepared chemical components, components eluted from the silver salt photosensitive material and chemical reaction. Since the product is contained, it adversely affects the photographic processing, so in order to maintain the photographic processing satisfactorily, the performance is supplemented by replenishing a new solution according to the amount of the processed photosensitive material, and unnecessary contaminants are included Discard the aged liquid. This is a photographic processing waste liquid. And the amount of waste is
Although it depends on the type of photographic processing, there is one with 0.03 cc / cm 2 to give an example.
ここでは、処理する感光材料の面積に対する液量で示
した。従って、業として写真処理を多量に、継続的に行
なう場合に、発生する写真処理廃液は多量で、これを回
収業者に依頼して無害化してもらう迄の保管場所にも困
るような状況であった。回収業者は電解法等の手段で写
真処理廃液に含まれる銀を回収したり、無公害化処理を
施しているが、これら回収にはコストが多大にかかるた
め、何とか、写真処理廃液を減らそうという工夫や無公
害化の工夫がなされてきた。活性汚泥法、蒸発法、電解
酸化法、逆浸透法、化学処理法等が知られているが、こ
れらは未だ効率が良くなく、コスト高で、広く需要に応
えるものではなかった。Here, the liquid amount is shown with respect to the area of the photosensitive material to be processed. Therefore, when a large amount of photographic processing is continuously performed as a business, a large amount of photographic processing waste liquid is generated. Was. Recoverers recover silver contained in photographic processing wastewater by means such as electrolysis, or perform pollution-free treatment.However, such recovery is very costly, so we will manage to reduce the amount of photographic processing wastewater. It has been devised and pollution-free. The activated sludge method, the evaporation method, the electrolytic oxidation method, the reverse osmosis method, the chemical treatment method, and the like are known, but they are still inefficient, costly, and do not meet wide demand.
写真処理廃液から水分を分離し、無害な水を投棄して
しまえば、残る固形成分は少ないから、回収処理の点で
有利であるから、近年、蒸発濃縮方法で、水分を除去す
る工夫が数多くなされている。しかし、問題は、写真処
理廃液を加熱蒸発したときに水分の蒸発だけでなく、不
快なガスが発生するから、安易に既存の蒸発手段で、水
分を除去することは出来ないことである。そのため、ガ
ス対策等を施した大がかりな装置が必要となるから、コ
スト及び管理面からして、大規模な処理業者に設置する
ことが考えられ、求められていた簡便化、省スペース省
コストのねらいからは外れてしまうものである。If water is separated from photographic processing waste liquid and harmless water is discarded, there are few remaining solid components, which is advantageous in terms of recovery processing.In recent years, there have been many schemes to remove water by evaporative concentration. It has been done. However, a problem is that not only the evaporation of water but also the generation of unpleasant gas when the photographic processing waste liquid is heated and evaporated, the water cannot be easily removed by the existing evaporation means. For this reason, large-scale equipment with gas countermeasures, etc., is required.From the viewpoint of cost and management, it is conceivable to install the equipment at a large-scale treatment company. It deviates from the aim.
写真処理廃液は自然界に投棄するには公害負荷が高く
て許されない。しかし、写真処理廃液の発生量は多く比
較的小規模の写真処理業者でも一日に10リットル程度は
発生し、その保管場所の確保と廃液処理業者への支払い
も多額になっている。そこで写真処理廃液が発生するす
ぐその近くで容易に減量が出来る方法が切望されてい
た。写真処理廃液を減量する手段として、含有水分を分
離し、除去する手段があり、その具体的方法として、蒸
発濃縮方法がある。一般に写真処理液は１リットル当り
70g程度の塩類が含まれるだけで残りは水分であって、
写真処理廃液であっても大きな相違はないから、この水
分を除去できれば、上記のごとき保管場所の問題はなく
なる。但し写真処理廃液から、完全に水分を取り除くま
で蒸発濃縮するには、多大のエネルギーを必要とし、む
しろ経済的でないことはいうまでもない。一方、一般的
に蒸発処理を適用するには写真処理廃液の場合は不快な
ガス発生または有害ガスの発生があり、かなりの工夫を
しなければ実用化してはならない。即ち、亜硫酸ガス、
硫化水素、アンモニアガス等の有害ないしは悪臭性のガ
スが発生する。これは、写真処理液の定着液や漂白定着
液としてよく用いられるチオ硫酸アンモニウムや亜硫酸
塩（アンモニウム塩、ナトリウム塩またはカリウム塩）
が高温で分解することによって発生するのであって、こ
れをヒントにして対策を構ずればよい。The waste of photographic processing waste is unacceptable for dumping into the natural world due to its high pollution load. However, the amount of waste photographic processing liquid is large, and even a relatively small photographic processing company generates about 10 liters a day, and the storage place and payment to the effluent processing company are large. Therefore, there has been a long-felt need for a method capable of easily reducing the weight immediately near the photographic processing waste liquid. As a means for reducing the amount of photographic processing waste liquid, there is a means for separating and removing contained water, and as a specific method, there is an evaporative concentration method. Generally, photographic processing solution is per liter
The rest is water, just containing about 70 g of salts,
Even if it is a photographic processing waste liquid, there is no significant difference, and if the water can be removed, the above-mentioned problem of the storage place is eliminated. However, it goes without saying that evaporating and concentrating the photographic processing waste liquid until water is completely removed requires a large amount of energy and is not economical. On the other hand, in general, photographic processing waste liquids generate unpleasant gas or harmful gas when applying the evaporation processing, so that practical use must be made without considerable contrivance. That is, sulfur dioxide gas,
Harmful or odorous gases such as hydrogen sulfide and ammonia gas are generated. These include ammonium thiosulfate and sulfite (ammonium, sodium or potassium salts) often used as fixers and bleach-fixers for photographic processing solutions.
Is generated by decomposition at a high temperature, and a countermeasure may be taken using this as a hint.
この発明はこのような従来技術の欠点に鑑み、ガス発
生がなく、熱効率がよく、コンパクトで経済的な写真処
理廃液の蒸発濃縮装置を提供することを課題目的とする
ものである。SUMMARY OF THE INVENTION In view of the drawbacks of the prior art, it is an object of the present invention to provide a compact and economical apparatus for evaporating and condensing photographic processing waste liquid without generating gas, having good thermal efficiency.
この目的は、写真処理廃液を貯溜する蒸発釜と、この
蒸発釜の中の写真処理廃液を加熱する熱交換手段と、こ
の熱交換手段に加熱媒体を通すとともに、上記蒸発釜で
発生する蒸気を冷却凝縮する冷却手段に冷却媒体を通す
ヒートポンプと、上記冷却手段と、この冷却手段を通る
冷却媒体の温度変化を検出する手段とよりなり、上記検
出出力に基づいて、蒸発濃縮を停止する如くした写真処
理廃液の蒸発濃縮装置によって達成される。The purpose is to evaporate the photographic processing waste liquid, heat exchanging means for heating the photographic processing waste liquid in the evaporating pot, and to pass the heating medium through the heat exchanging means and to generate the steam generated in the evaporating pot. A heat pump for passing a cooling medium through cooling means for cooling and condensing, the cooling means, and means for detecting a change in temperature of the cooling medium passing through the cooling means; and based on the detection output, the evaporative concentration is stopped. Achieved by an apparatus for evaporating and concentrating photographic processing wastewater.
この発明で蒸発釜とは、昇圧及び減圧に耐える剛性を
有する耐食性の密閉可能の容器であり、写真処理廃液を
注入する注入口と、濃縮後のスラッジを取り出す取り出
し口と、蒸気を導き出す蒸気吸出口とを有し、この中に
またはこの外周に、上記蒸発釜に注入した写真処理廃液
を加熱する熱交換手段を備えている。In the present invention, the evaporator is a corrosion-resistant and sealable container having rigidity to withstand pressure increase and decrease, and an inlet for injecting photographic processing waste liquid, an outlet for taking out sludge after concentration, and a vapor suction for leading out steam. A heat exchange means for heating the photographic processing waste liquid injected into the evaporator in or on the outer periphery thereof.
ヒートポンプとは、ガス媒体を導入し断熱圧縮するこ
とにより、出口側は高温になり、入口側は低温となる効
果を利用する加熱及び冷却の両機能を合わせ持つもの
で、この発明の蒸発釜より出る蒸気を直接そのガス媒体
として使用するカランドリア方式と、別に冷媒をクロー
ズドで使用するエアコン方式があって、この発明では、
いずれでもよい。The heat pump has both heating and cooling functions using the effect of introducing a gas medium and adiabatically compressing the outlet side to have a high temperature and the inlet side to have a low temperature. There is a calandria system that uses the steam that exits directly as its gas medium, and an air conditioning system that uses a closed refrigerant separately.
Either may be used.
次にこの発明の実施例を図をもって説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
第１図は実施例の断面図である。蒸発釜１には、注入
口２から写真処理廃液が注入され、その液面はレベルＡ
に至っている。FIG. 1 is a sectional view of the embodiment. The photographic processing waste liquid is injected into the evaporator 1 from the injection port 2, and the liquid level is at level A.
Has been reached.
上記写真処理廃液に浸る状態で、熱交換手段５があ
り、この熱交換手段５の管の中を、ヒートポンプ４で加
圧昇温した加熱媒体が矢印方向に通っている。上記写真
処理廃液の蒸発釜１の上方空間には、冷却手段６があっ
て、この冷却手段６の管の中をヒートポンプ４の冷却サ
イクルの冷却媒体が矢印方向に通っている。そして、冷
却手段６の下には、上記が冷却凝縮した水滴を受ける受
け皿７があり、ここにたまった水は、管８を通って容器
９に排出される。蒸発釜１の天井にも水滴は付くので、
天井を傾斜させ、トイ10を形成し、集めた水を、管８を
通して容器９に排出している。There is a heat exchange means 5 in a state of being immersed in the photographic processing waste liquid, and a heating medium pressurized and heated by the heat pump 4 passes through a tube of the heat exchange means 5 in the direction of the arrow. Cooling means 6 is provided in the space above the photographic processing waste liquid evaporator 1, and the cooling medium of the cooling cycle of the heat pump 4 passes through the pipe of the cooling means 6 in the direction of the arrow. Below the cooling means 6, there is a receiving tray 7 for receiving the water droplets cooled and condensed, and the accumulated water is discharged to a container 9 through a pipe 8. Water drops also adhere to the ceiling of evaporator 1,
The ceiling is inclined to form a toy 10 and the collected water is drained through a tube 8 into a container 9.
ヒートポンプ４はこの実施例ではエアコン方式の、冷
媒使用のものを示した。ヒートポンプ４の中では膨張弁
と電動コンプレッサーによる冷熱サイクルが行なわれ低
温となって熱吸収する冷却媒体が冷却手段６を通り、高
温となって、放熱する加熱媒体が熱交換手段５を通る如
く構成している。３はスラッジ取り出し口である。In this embodiment, the heat pump 4 is of an air conditioner type and uses a refrigerant. In the heat pump 4, a cooling and heating cycle is performed by an expansion valve and an electric compressor, so that a cooling medium that absorbs heat at a low temperature passes through the cooling unit 6, and a heating medium that reaches a high temperature and radiates heat passes through the heat exchange unit 5. doing. Reference numeral 3 denotes a sludge outlet.
冷却手段６には温度センサー11を設け冷却媒体の温度
を検出する如く構成した。そしてこの温度センサー11の
検出出力にもとづいて、蒸発濃縮を停止する如くしてあ
る。即ち蒸発が進むにつれて、写真処理廃液に含まれる
水分が減ると、蒸発する蒸気量が減るため、冷却手段６
の冷却能力は見かけ過剰となり、冷却手段６を通る冷却
媒体は吸熱不足となって、その温度が下がる。この点を
温度センサー11で検出し、蒸発濃縮を停止するものであ
る。The cooling means 6 is provided with a temperature sensor 11 to detect the temperature of the cooling medium. Then, based on the detection output of the temperature sensor 11, the evaporation and concentration are stopped. That is, if the water contained in the photographic processing waste liquid decreases as the evaporation proceeds, the amount of vapor to evaporate decreases.
The cooling capacity of the cooling medium becomes apparently excessive, and the temperature of the cooling medium passing through the cooling means 6 becomes insufficient due to insufficient heat absorption. This point is detected by the temperature sensor 11, and the evaporation and concentration are stopped.
しかし、その温度値は、ここに構成する系の大きさと
か、濃縮後のスラッジ取り出し易さとか、ヒートポンプ
を運転し続けるための経済性とかを考慮して決めるもの
であって、この発明では特定するものではない。However, the temperature value is determined in consideration of the size of the system constituted here, the ease of removing sludge after concentration, and the economics of continuing to operate the heat pump. It does not do.
次に蒸発濃縮作業の手順を説明する。 Next, the procedure of the evaporative concentration operation will be described.
注入口２のフタを開け写真処理液を注入して、液面レ
ベルＡに至る。このレベルチェックは蒸発釜１の当該側
壁の一部に透明材質で構成した監視窓（図示せず）で行
なうことが出来る。The lid of the inlet 2 is opened, and the photographic processing liquid is injected to reach the liquid level A. This level check can be performed through a monitoring window (not shown) made of a transparent material on a part of the side wall of the evaporator 1.
そして、注入口２のフタを閉め、ヒートポンプ４の運
転を開始する。Then, the lid of the inlet 2 is closed, and the operation of the heat pump 4 is started.
写真処理廃液は急加熱により部分的にでも高温になる
と、有害または不快なガスが発生するから、熱交換手段
５はその放熱面積をできるだけ大きくとり、上記写真処
理廃液との接触面積を大きくして、上記写真処理廃液の
中で温度勾配を少なくする。そこで、ヒートポンプ４の
表面温度は100℃以下に保つことが好ましい。従ってこ
の熱交換手段５にも温度センサーを設けて、その温度を
検出しフィードバックして加熱媒体の流量を変えるなど
して上記温度を保つ如くしてもよい。If the photographic processing waste liquid is partially heated to a high temperature due to rapid heating, harmful or unpleasant gas is generated. Therefore, the heat exchanging means 5 increases the heat radiation area as much as possible and increases the contact area with the photographic processing waste liquid. The temperature gradient is reduced in the photographic processing waste liquid. Therefore, it is preferable to keep the surface temperature of the heat pump 4 at 100 ° C. or lower. Therefore, a temperature sensor may also be provided in the heat exchange means 5, and the temperature may be maintained by detecting the temperature and feeding it back to change the flow rate of the heating medium.
このようにして、上記写真処理廃液が加熱され、含有
水分が蒸発する。Thus, the photographic processing waste liquid is heated, and the water content evaporates.
この蒸発形態は初め少なく、次第にまして盛んにな
り、濃縮が進につれて、含有水分が減るにともなって蒸
発量が急激に減少する。This evaporation form is initially small, becomes more and more active, and as the concentration progresses, the amount of evaporation decreases rapidly as the water content decreases.
従って冷却手段６の冷媒の温度変化を見ると上記の如
き蒸発蒸気量の変化にともなって、次第に温度上昇し、
それから次第に低下する変化をするからこの低下してき
た適切な時点、この蒸発濃縮作業を停止するとよい。こ
こで、ヒートポンプの運転を停止する。次にスラッジ取
り出し口３のフタを開いて濃縮されてスラッジとなった
上記写真処理廃液の濃縮物をかき出して、取り去り、次
のサイクルに備える。別の構成として、ヒートポンプが
エアコン方式の場合には、冷却媒体が上記加熱手段でも
あって、この加熱媒体の温度を検出して、蒸発濃縮を停
止してもよい。即ち蒸発濃縮が進み、液中含有水分の減
少にともなって液による熱の脱取が減少するので熱交換
手段５の能力が余り、その表面温度は上昇するからこの
加熱媒体の温度を検出することによっても濃縮が適切に
停止できることを示している。Therefore, when the temperature change of the refrigerant in the cooling means 6 is observed, the temperature gradually rises with the change in the amount of evaporated vapor as described above,
Then, the evaporating and concentrating operation may be stopped at an appropriate time when the evaporating and concentrating operation is performed. Here, the operation of the heat pump is stopped. Next, the lid of the sludge take-out port 3 is opened, and the concentrate of the photographic processing waste liquid, which has been concentrated to form sludge, is scraped out and removed to prepare for the next cycle. As another configuration, when the heat pump is of an air conditioner type, the cooling medium may also be the heating means, and the temperature of the heating medium may be detected to stop the evaporation and concentration. That is, since evaporation and concentration progress and heat removal by the liquid decreases as the water content in the liquid decreases, the ability of the heat exchange means 5 becomes excessive and its surface temperature rises. Also shows that concentration can be stopped appropriately.
このように構成したから、写真処理廃液を加熱するた
めの電熱ヒーターが不要であること、蒸発した蒸気を冷
却凝縮して水に戻すための冷却手段がコンパクトに形成
できること、及び、冷媒の温度変化を検出して、適切に
蒸発濃縮を停止し、次のサイクルを行える経済性を備え
ることなどのメリットがある写真処理廃液の蒸発濃縮装
置を提供することが出来る。With this configuration, there is no need for an electric heater for heating the photographic processing waste liquid, compact cooling means for cooling and condensing the evaporated vapor back to water can be formed, and the temperature change of the refrigerant. Can be provided to provide an apparatus for evaporating and concentrating photographic processing waste liquid, which has an advantage that it has an economical effect that the evaporative concentration can be stopped appropriately and the next cycle can be performed.
第１図は実施例の断面図。 １…蒸発釜、２…注入口、３…スラッジ取り出し口、４
…ヒートポンプ、５…熱交換手段、６…冷却手段、７…
受け皿、８…管、９…容器、10…温度センサーFIG. 1 is a sectional view of the embodiment. 1 ... Evaporation pot, 2 ... Injection port, 3 ... Sludge removal port, 4
... heat pump, 5 ... heat exchange means, 6 ... cooling means, 7 ...
Saucer, 8 ... tube, 9 ... container, 10 ... temperature sensor
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C02F 1/04 B01D 1/00 G03D 3/00 G03C 5/00 Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) C02F 1/04 B01D 1/00 G03D 3/00 G03C 5/00
Claims (1)
発釜の中の写真処理廃液を加熱する熱交換手段と、この
熱交換手段に加熱媒体を通すとともに上記蒸発釜で発生
する蒸気を冷却凝縮する冷却手段に冷却媒体を通すヒー
トポンプと、上記冷却手段と、この冷却手段を通る冷却
媒体の温度変化を検出する手段とよりなり、上記検出出
力に基づいて、蒸発濃縮を停止する如くした写真処理廃
液の蒸発濃縮装置。An evaporator for storing a photographic processing waste liquid, a heat exchange means for heating the photographic processing waste liquid in the evaporator, a heating medium passing through the heat exchange means, and a vapor generated in the evaporator. A heat pump for passing a cooling medium through cooling means for cooling and condensing, the cooling means, and means for detecting a change in temperature of the cooling medium passing through the cooling means; and based on the detection output, the evaporative concentration is stopped. Evaporation and concentration equipment for photographic processing waste liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10937890A JP2952507B2 (en) | 1990-04-25 | 1990-04-25 | Evaporation and concentration equipment for photographic processing waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10937890A JP2952507B2 (en) | 1990-04-25 | 1990-04-25 | Evaporation and concentration equipment for photographic processing waste liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH047076A JPH047076A (en) | 1992-01-10 |
| JP2952507B2 true JP2952507B2 (en) | 1999-09-27 |
Family
ID=14508730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10937890A Expired - Fee Related JP2952507B2 (en) | 1990-04-25 | 1990-04-25 | Evaporation and concentration equipment for photographic processing waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2952507B2 (en) |
-
1990
- 1990-04-25 JP JP10937890A patent/JP2952507B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH047076A (en) | 1992-01-10 |
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